pale blue dot are the only technologically advanced (relative term) intelligence in the universe, I'm also not quite so perplexed about the Fermi Paradox (where's the proof?).

For one thing, I don't think an alien intelligence is going to come and visit this planet just because it's here. For one thing, their technology for finding this planet would have to be incredibly precise and acute. Think about it... we've only begun to find exoplanets in the last couple of decades -- by watching for wobbles in a star's brightness. We've been able to fine tune things to look for evidence of certain elements and compounds within an exoplanets composition, but we're really guessing on a lot of what we're finding. Even if we were capable of FTL travel, we're not about to start spending billions of dollars sending a probe out to some exoplanet 100 light years away on the chance it might have life. At the very least, we'd want to detect some kind of evidence.

This is where that movie, Contact, comes into play. Not a great film, but made a great point when the aliens sent back a recording of Hitler opening the 1936 Berlin Olympics. That was one of the earlier human broadcasts that went out into space. We've been sending such signals for only about a hundred years, meaning any aliens who would have heard us and sent a reply via radio would have to be within 50 light years of us. That's REALLY CLOSE when you're talking about stars in the galaxy. Proxima Centauri, about 4 LY away, is the closest. There might be all of 160 stars within 50 LY of the sun. Maybe.

Really, what are the odds of an intelligence being among those 160 star systems which is capable of hearing our broadcasts, finding us, sending a message back, and/or traveling here to visit us in the last 50 years? I said it's mathematically impossible that we are alone, but that's only because there is a population of some 200 billion stars in this galaxy and there are multiple trillions of galaxies in the universe. The numbers are just too big for us to be alone. But when you drop the sample down to 160 stars? The odds swing wildly in the other direction.

Anyway, that's why we haven't been visited by aliens. However, whenever they do arrive, I think it would behoove us greatly to assume E.T. has bad intentions and we should be prepared to repel an invasion. If they arrive and they're cool, then okay. But we should be ready to fight them just in case.

And E.T. better be coming assuming we're ready for em -- so the alternate plan to invasion should definitely be on the table. Like maybe, if a pathogen isn't a good idea, they should've nuked us from orbit. It's the only way to be sure.